Daftar Isi
1. Why select statement against a table in oracle returns ORA-04021
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2. DDL_LOCK_TIMEOUT : DDL With the WAIT Option
In this video we'll demonstrate the DDL_LOCK_TIMEOUT feature, introduced in 11g. DDL_LOCK_TIMEOUT : DDL With the WAIT ...
3. ORA-00921: unexpected end of SQL command - Oracle Database 12c Error Messages
In this video we are going to see how to fix below Oracle Database 12c Error Message.
4. Oracle - Understanding the tnsnames.ora and listener.ora files
Oracle - Understanding the tnsnames.
5. Fix ORA-29024 Error in Oracle APEX Generative AI Service (Works for APEX 26ai & 24)
Learn how to fix the
6. Fix ORA-28000 Account Locked Error (2026) – Oracle SQL Developer Tutorial
Hey friends, in today's short video I show you how to fix the
7. Why EVERYONE gets ORA-12154 when using 21c
Chances are the first time you try to use 21c, you are going to get an
8. ORA-02064: distributed operation not supported
This is Short Presentation about why Oracle database raise error "
9. Oracle Troubleshooting ORA 4031 errors and shared pool memory troubleshooting 207031020
... can lead to
10. How to Fix ORA-12505: TNS Listener Does Not Currently Know of SID (2026)
Hey friends, in today's short video I show you how to fix the
11. The 4 REAL Causes of ORA-04031 (Hard Parsing Isn't One)
12. #8- Error ORA 00018 maximum number of sessions exceeded 🔥
Steps to increase the number for processes/sessions at database level in Oracle is as follows S U B S C R I B E ...
13. Oracle Database Control File Lost ORA-00205, ORA-00202, ORA-00210, ORA-27041
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14. DBMS_METADATA ... ORA-01031: insufficient privileges
No matter how powerful a GRANT you give to a user, they still might NOT be able to use the DBMS_METADATA package.
15. Gradual Database Password Rollover Time in Oracle Database 21c
In this video we'll demonstrate gradual database password rollover time, introduced in Oracle database 21c. Gradual Database ...
Ora 04021 Information Guide
Introduction of Ora 04021
Key Details
Developments
Full Guide
Data is compiled from public records and verified media reports.
Last Updated: August 11, 2026
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Disclaimer: Disclaimer: All information is compiled from publicly available data, media reports, and analysis. Actual details may vary.